公开(公告)号：US3916750A

公开(公告)日：1975-11-04

申请号：US37618973

申请日：1973-07-03

申请人： BALDWIN CO D H

发明人： UETRECHT DALE M

IPC分类号： G10H1/18 ,  G10H1/00

CPC分类号： G10H1/18 ,  G10H1/182

摘要： An electronic organ including a counter acting as a source of twelve repetitive time position multiplexed signals, each derived at a different time on a different lead, one time position being provided for each note nomenclature of the musical scale, time positioned pulses being gated through respective key switches having the same nomenclature as respective time position slots. All time positioned signals passed by any octave of key switches are combined on a single octave output lead assigned to that octave, and signals on octave output leads are selectively combined by coupler logic, output signals derivable from the coupler logic network being combined with pulse position signals derived directly from the source to provide coincident gate signals which cause tone source signals to be fed via tone color filters to an output load.

摘要翻译： 一种电子机器，包括作为十二个重复时间位置多路复用信号的源的计数器，每个反馈时间位置多路复用信号源于不同的引线上的不同时间，为音阶的每个音符命名提供一个时间位置，时间定位的脉冲通过相应的 键开关具有与各个时间位置槽相同的命名。 通过按键开关的任何倍频程传递的所有时间定位信号被组合在分配给该倍频程的单个八度输出引线上，并且倍频程输出引线上的信号由耦合器逻辑选择性组合，从耦合器逻辑网络导出的输出信号与脉冲位置 直接从源极导出的信号，以提供一致的门信号，使得音源信号通过色调滤波器馈送到输出负载。

公开(公告)号：US3880633A

公开(公告)日：1975-04-29

申请号：US43170574

申请日：1974-01-08

申请人： BALDWIN CO D H

发明人： JORDAN JOHN F ,  LAMPKIN CURTIS

IPC分类号： H01L31/04 ,  C03C17/34 ,  H01L21/368 ,  H01L31/0336 ,  H01L31/18 ,  C03B18/00 ,  C03C17/10

CPC分类号： H01L31/1876 ,  C03C17/3417 ,  C03C17/347 ,  C03C2217/211 ,  C03C2217/228 ,  C03C2218/112 ,  H01L21/02422 ,  H01L21/02474 ,  H01L21/02491 ,  H01L21/02568 ,  H01L21/02628 ,  H01L31/03365 ,  Y02E10/50 ,  Y02P70/521

摘要： A method of making low cost solar cells on a large scale basis by means of a continuous process of fabricating float glass and coating the float glass, in sequence, with tin oxide, cadmium sulphide, and copper sulphide, while the glass floats atop tanks of molten material in a furnace of proper temperature for each step of the process, the application of the coatings, in a preferred embodiment, being accomplished by depositing materials which form the coatings on contact with heated surfaces at such slow rates and, in the case of spray application, via drops of such uniformity that the float glass may (1) remain at uniform temperatures by virtue of the superior thermal conductivity of the molten material and retain those temperatures despite the abstraction of heat from the glass by evaporation of liquids and/or formation of crystalline layers, and (2) be substantially free of temperature gradients along the surface of the sheet glass.

摘要翻译： 一种通过连续制造浮法玻璃并依次用氧化锡，硫化镉和硫化铜涂覆浮法玻璃来大规模制造低成本太阳能电池的方法，同时玻璃漂浮在 在本方法的每个步骤的适当温度的炉子中的熔融材料，在优选实施方案中，涂层的施加通过以如此慢的速率沉积与加热表面接触形成涂层的材料来实现，并且在 喷雾施加，通过这样的均匀性的液滴，浮法玻璃可以（1）由于熔融材料的优异的热导率而保持在均匀的温度，并且保持这些温度，尽管通过蒸发液体和/或从玻璃中抽出热量 结晶层的形成，和（2）沿着玻璃板的表面基本上没有温度梯度。

公开(公告)号：US3789718A

公开(公告)日：1974-02-05

申请号：US3789718D

申请日：1971-12-30

申请人： BALDWIN CO D H

发明人： BUNGER D

IPC分类号： G10H1/38 ,  G10H1/00

CPC分类号： G10H1/38

摘要： An electronic chord organ, in which voltage controlled oscillators are each supplied with the same voltage, the voltage being selected by actuation of keys of an organ keyboard, and the currents supplied to the individual oscillators being selected to sound a musical chord. The voltage controlled oscillators each receive voltages from a resistive voltage divider via a voltage sample and hold circuit, key switches applying voltage from selected points along the voltage divider via diodes to a common bus, the bus controlling the frequencies of all the oscillators, and the diodes serving to render only one key switch operable to apply voltage to the bus when plural ones of the key switches are simultaneously closed.

摘要翻译： 电子和弦器件，其中每个电压控制振荡器被提供相同的电压，通过致动器官键盘的键来选择电压，并且选择提供给各个振荡器的电流以发出音乐和弦。 压控振荡器各自通过电压采样和保持电路从电阻分压器接收电压，按键开关将电压从分压器上的选定点通过二极管施加到公共总线，总线控制所有振荡器的频率，以及 用于仅使一个键开关可操作以在多个键开关同时闭合时向总线施加电压的二极管。

公开(公告)号：US3748598A

公开(公告)日：1973-07-24

申请号：US3748598D

申请日：1971-12-07

申请人： BALDWIN CO D H

发明人： UETRECHT D ,  MUNCH W ,  WAGNER W

IPC分类号： G10H1/00 ,  G10H1/043 ,  H03C3/00

CPC分类号： G10H1/0091 ,  G10H1/043

摘要： Organ output, comprising a band of audio frequencies, is divided into four frequency sub-bands, each of which is shifted in frequency by one of four respective diverse increments. The first and third sub-bands are acoustically transduced and radiated via a rotary loudspeaker and the second and fourth sub-bands via a stationary loudspeaker. These radiations are acoustically mixed with the radiated unmodified organ output to produce desired tonal effects. Frequency shifting of the sub-bands can be inhibited at will, means being provided automatically to maintain the acoustic signal level the same whether or not frequency shifting is in force, for a given setting of the expression pedal. Each of the four sub-bands can be shifted by either of two respective frequency increments, or inhibited, to permit selective variation of the overall acoustic effect. Frequency shifting for each sub-band is achieved by dividing the organ tone into three components of equal magnitude and 120* phase difference. To obtain the 120* spaced components, the input tone signal is applied to two phase shift filters which provide two of the components, the third component being derived by summing the first two components and inverting the resulting signal. Each component is applied to a respective section of four threesection modulators, each section comprising a transistor pair connected to form a DC differential amplifier with one input at AC ground. The emitter currents of each transistor pair are varied at the shift frequency by a three-phase oscillator, each modulator section being controlled by a respective oscillator phase. The outputs of each section of the modulator are combined to cancel the oscillator components provided at each section.

摘要翻译： 包括音频频带的器官输出被分成四个频率子带，每个频率子频率以四个相应的不同增量之一移动。 第一和第三子带通过旋转扬声器和第二和第四子带通过固定扬声器进行声学传导和辐射。 这些辐射与辐射的未改变的器官输出声学混合以产生期望的音调效应。 对于给定的表情踏板设置，可以随意地禁止子频带的频移，手段被自动设置以保持声信号电平相同，无论频移是否有效。 四个子带中的每一个可以被移动两个相应的频率增量中的任一个或被抑制，以允许整体声效的选择性变化。 通过将器官色调除以相等幅度和120°相位差的三个分量来实现每个子带的频移。 为了获得120°间隔的分量，输入音调信号被施加到提供两个分量的两个相移滤波器，第三分量通过对前两个分量求和并反转所得到的信号而导出。 每个分量被施加到四个三段调制器的相应部分，每个部分包括晶体管对，其连接以形成具有AC输入的AC差分放大器。 每个晶体管对的发射极电流在移相频率处由三相振荡器变化，每个调制器部分由相应的振荡器相位控制。 调制器的每个部分的输出被组合以抵消在每个部分处提供的振荡器部件。

公开(公告)号：US3746430A

公开(公告)日：1973-07-17

申请号：US3746430D

申请日：1971-09-15

申请人： BALDWIN CO D H

发明人： BREAN J ,  MATHEVOSIAN Y

IPC分类号： B60R1/08 ,  B60R1/04

CPC分类号： B60R1/087

摘要： A day-night mirror for a vehicle, photo-electrically controlled in response to light directed from rearwardly of the vehicle and to ambient light, impinging respectively on photocells which via capacitive coupling control the motion of a reversible motor, in the form of a bifilar solenoid, so that only a change in status of the photocells is communicated to the motor in the form of a pulse leaving the motor to be freely actuated manually absent such a pulse, and also reducing current drain in the system.

摘要翻译： 用于车辆的日夜镜，响应于从车辆后方引导的光和环境光照光电控制，分别照射到通过电容耦合控制可逆电动机的运动的光电管，形式为双向 螺线管，使得只有光电管的状态改变以脉冲的形式传送到电动机，使电动机手动地自由地启动而不存在这样的脉冲，并且还减少系统中的电流消耗。

公开(公告)号：US3696200A

公开(公告)日：1972-10-03

申请号：US3696200D

申请日：1970-10-27

申请人： BALDWIN CO D H

发明人： BUNGER DAVID A

IPC分类号： G10H1/30 ,  G10H1/02

CPC分类号： G10H1/30

摘要： System for sounding two organ voices and/or footages reiteratively in alternation. Several embodiments are provided as follows: 1. Tone is applied via a key switch to two tone color filters in parallel and outputs of the filters are applied in alternation to a loudspeaker or to separate loudspeakers. 2. Two footages are applied to distinct tone color filters and the outputs of these applied reiteratively in alternation to a loudspeaker or to separate loudspeakers. 3. Two footages of the same tone color are applied reiteratively in alternation to a loudspeaker or to separate loudspeakers. 4. Three or more tones are applied in sequence via different tone color filters to a loudspeaker. 5. Solo tones proceed via one tone filter so long as pedal notes are not called for. When pedal note is played solo tone proceeds via a different tone filter.

摘要翻译： 重复发声两个声音和/或声势的系统。 提供以下几个实施例：

公开(公告)号：US3685384A

公开(公告)日：1972-08-22

申请号：US3685384D

申请日：1969-12-18

申请人： DANIEL W MARTIN ,  JOHN L STEIN ,  BALDWIN CO D H

发明人： MARTIN DANIEL W ,  STEIN JOHN L

IPC分类号： G10H3/18 ,  G10C3/04

CPC分类号： G10H3/185 ,  G10H2220/471 ,  G10H2220/501 ,  G10H2220/541

摘要： An electropiano employing as a transducer rail one or relatively few strips of U-shaped aluminum extrusion between the arms of which are located a plurality of piezo-electric transducer elements separated from one arm by resilient damping pads located above metallic shims. The total number of transducer elements is about 25 percent of the number of tones, the transducers not being individual to the strings, but being acoustically coupled to the strings through the extrusion or strip. The strip is supported between the strings and a layer of resilient damping material which is located directly on the plate of the electropiano, and is secured only against gross lateral movement relative to the plate so that longitudinal acoustic vibrations along the length of the strip and flexural vibrations of the extrusion can occur. The transducer elements each have one electrode contacting an arm of the extrusion, which then provides a common electrical ground. The other electrode of each transducer contacts a conducting shim superposed on an electrical insulating and acoustical damping pad. These shims are connected to a common lead, so that all the outputs of a group of transducers may be applied to a common terminal. Damping means are provided just beyond the tuned segments of the strings, to provide tone diminution simulating that of a true piano.

摘要翻译： 一种电子钢琴，用作传感器导轨，其一对或相对较少的U形铝挤压条之间的臂部位于通过位于金属垫片上方的弹性阻尼垫与一个臂分离的多个压电换能器元件。 传感器元件的总数约为色调数的25％，传感器不是与弦相关，而是通过挤出或条带声耦合到弦上。 条带被支撑在弦之间和一层弹性阻尼材料之间，该层直接位于电子琴的板上，并且仅被固定在相对于板的大体横向运动上，使得沿着条的长度和弯曲的纵向声学振动 可能发生挤压的振动。 换能器元件各自具有一个电极，该电极与挤出件的臂接触，然后提供公共电接地。 每个传感器的另一个电极接触叠加在电绝缘和声阻尼垫上的传导垫片。 这些垫片连接到公共引线，使得一组换能器的所有输出可以被施加到公共端子。 提供的阻尼装置刚好超出弦的调谐段，以提供模拟真正钢琴的音调减少。

公开(公告)号：US3670325A

公开(公告)日：1972-06-13

申请号：US3670325D

申请日：1970-05-04

申请人： BALDWIN CO D H

发明人： MATHEVOSIAN YERVAND

IPC分类号： H03K5/02 ,  H03K17/968 ,  H03M1/00 ,  G08C9/06

CPC分类号： H03K17/968 ,  H03K5/02 ,  H03M1/30

摘要： A photoresponsive device employing a silicon photocell to excite on illumination of the photocell, a transistor in a discriminator circuit and drive the transistor from a non-conducting to a conducting condition. The photovoltaic output of the silicon photodiode is added to the direct current potential of a bias source to exceed the threshold conduction potential of the discriminator transistor. Thermal stability is achieved by employing a transistor in the bias source of identical type and similar characteristics to the discriminator transistor. The discriminator transistor has an emitter-collector circuit which includes a load resistor, and the output which is developed across the load resistor is amplified by a common emitter transistor amplifier circuit. The transistor of the amplifier circuit is an N-P-N type, while the transistor of the discriminator circuit is a P-N-P type. In addition to employing a bias source responsive to ambient temperature, a second bias source is used to reduce the collector-emitter potential of the discriminator transistor responsive to temperature increases. The second bias source utilizes a thermistor in addition to the emitter-collector potential of a bias supply transistor in order to compensate for the nonlinear temperature-output characteristics of silicon photodiodes.

摘要翻译： 使用硅光电池在照射光电池时激发的光响应装置，鉴别器电路中的晶体管，并驱动晶体管从不导通到导通状态。 硅光电二极管的光伏输出被加到偏置源的直流电位以超过鉴别晶体管的阈值导通电位。 通过在鉴别晶体管的相同类型和类似特性的偏置源中采用晶体管来实现热稳定性。 鉴相器晶体管具有包括负载电阻器的发射极 - 集电极电路，并且在负载电阻器两端产生的输出由公共发射极晶体管放大器电路放大。 放大电路的晶体管是N-P-N型，鉴别电路的晶体管是P-N-P型。 除了使用响应于环境温度的偏置源之外，第二偏置源用于响应于温度升高来减小鉴别器晶体管的集电极 - 发射极电位。 第二偏置源除了偏置电源晶体管的发射极 - 集电极电位之外还使用热敏电阻，以补偿硅光电二极管的非线性温度输出特性。

公开(公告)号：US3595120A

公开(公告)日：1971-07-27

申请号：US3595120D

申请日：1968-04-05

申请人： BALDWIN CO D H

发明人： MARTIN DANIEL W ,  MORGAN ROBERT G

IPC分类号： G09B15/00 ,  G09B15/08

CPC分类号： G09B15/00

摘要： A system of class intercommunication which provides: 1. INDIVIDUAL CHANNELS BETWEEN A TEACHER AND A. ANY STUDENT OF THE CLASS, OR B. ANY OF SEVERAL PRESELECTED GROUPS OF STUDENTS OF THE CLASS, OR C. THE ENTIRE CLASS. 2. PROVISION FOR ENSEMBLE PLAYING WITHIN ONE OR MORE OF THE GROUPS. 3. PROVISION FOR GROUP INSTRUCTION FROM AUDIO AIDS, ALL UNDER CONTROL OF THE TEACHER ONLY. Programming is achieved by rotary group programming switches, which determine the character of the facilities, e.g., individual, audio aids, and ensemble, by interlocked group selection switches which enable selection of one group to the exclusion of the others, by further interlocked selection switches which enable selection of an individual student to be monitored or privately instructed, and by a switch which enables the teacher to provide any or all groups with instruction simultaneously. A minimum number of switch actuators is provided, physically grouped for easy access and control within the span of one hand.

公开(公告)号：US3555956A

公开(公告)日：1971-01-19

申请号：US3555956D

申请日：1968-08-09

申请人： BALDWIN CO D H

发明人： MARTIN DANIEL W

IPC分类号： G10D9/06 ,  G10H3/00

CPC分类号： G10D9/06 ,  G10H3/00

摘要： The bell of a brass wind instrument emits sound into a first enclosure providing, at the bell, a relatively small open cavity containing a microphone, the remainder of the enclosure being filled with highly absorptive acoustical material. A highly resistive or absorptive long and narrow acoustical path exists around the outside of the first enclosure, extending from the small open front cavity to a rear opening to the atmosphere, and is formed by a second enclosure spaced from and surrounding the first enclosure.